Monolithic Power Systems (MPS) MP8853 Synchronous Step-Down Converters
Monolithic Power Systems (MPS) MP8853 Synchronous Step-Down Converters are high-efficiency, wide-input voltage range devices that deliver up to 4A of continuous output current. These converters feature a fully integrated solution with excellent load/line regulation, making the converters ideal for various applications. The MP8853 supports an input voltage range from 2.85V to 18V and offers an adjustable output voltage via an I2C interface, providing flexibility for dynamic voltage scaling. Additionally, these devices include comprehensive protection features such as over-current protection (OCP), over-voltage protection (OVP), and thermal shutdown, ensuring reliable operation in diverse environments. The MPS MP8853 Synchronous Step-Down Converters are available in a QFN-14 (3mm x 3mm) package.
Features
- Wide 2.85V to 18V operating input voltage (VIN) range
- 4A continuous output current (IOUT)
- 1% internal reference accuracy
- 0.6V to 1.108V I2C-configurable reference voltage (VREF) range in 4mV steps with slew rate control
- Default forced pulse-width modulation (PWM) mode
- Selectable pulse-frequency modulation (PFM)/PWM mode via the I2C
- Adjustable switching frequency (fSW) and current limit via the I2C
- 16x selectable I2C addresses
- Internal soft start (SS)
- Open-drain power good (PG) indication
- Output over-voltage protection (OVP)
- Over-current protection (OCP) with hiccup/latch-off mode
- 0.6V to 5.5V adjustable output voltage (VOUT) using the FB pin
- Available in a QFN-14 (3mm x 3mm) package
- Optimized performance with the MPS MPL-AL inductor series
Applications
- Solid-State Drives (SSDs)
- Flat-panel televisions and monitors
- Digital set-top boxes
- Distributed power systems
- Networking/servers
Specifications
- 2.85V to 18V supply voltage range
- 0.6V to 5.5V output voltage range, 7V maximum
- Supply current
- 4μA maximum shutdown
- 0.6mA to 2.5mA maximum quiescent range
- Typical switch on resistance
- 29mΩ high-side
- 14mΩ low-side
- 1μA maximum switch leakage
- 400kHz to 600kHz switching frequency range
- 185ns minimum off time
- 50ns minimum on time
- 3.57W maximum continuous power dissipation
- ±1.5% reference voltage
- 2ms typical soft start time
- +160°C typical thermal shutdown
- +20°C typical thermal hysteresis
- -40°C to +125°C operating junction temperature range
- +150°C maximum junction temperature
- +260°C maximum solder temperature
Typical Application
Functional Block Diagram
Development Tool
Monolithic Power Systems (MPS) EVL8853-Q-00A Evaluation Board
Demonstrates the capabilities of the MP8853 high-efficiency, synchronous stepdown converter.